JavaLearning/tutorial/CalRootOfQuadEq.java

package tutorial;

import java.util.Scanner;

public class CalRootOfQuadEq {
    public static void main (String[] args) {
        int a, b, c;
        double x1, x2, delta;
        Scanner input = new Scanner(System.in);
        
        System.out.print("Enter a : ");
        a = input.nextInt();
        
        System.out.print("Enter b : ");
        b = input.nextInt();
        
        System.out.print("enter c : ");
        c = input.nextInt();
        
        //-b plus or minus delta and divided by 2a
        //delta = sqaure root of (b square minus 4ac)
        delta = Math.sqrt(((Math.pow(b,2)-(4*a*c))));
        x1 = ((-b) + delta )/ 2*a;
        x2 = ((-b) - delta )/ 2*a;
        System.out.printf("%s%.2f%s%.2f\n", "x1= ",x1,", x2= ",x2);
             
    }
}